Looking at the 11-speed version of the venerable missing link. I understand that they are not reusable and a new one must be installed every time you separate the chain. I understand that they are removable (like all the other missing links) with an assist from "removable link pliers" (black handles) as shown below.

My question: Do I need the "missing link installation pliers" (red handles) that KMC sells? Are the 11-speed missing links tricky to install and easily ruined if not installed just right? Frankly I don't understand the need for these installation pliers. Actually I don't even understand how they work since it looks like when you squeeze the handles together, you are compressing the chain rather than expanding (see last pic). Please explain. Thank you.